I gave up on the illustrations halfway.
There is more to the story, but it’s more of a ‘if there’s demand’ kind of situation.
I am Kotoha.
I belong to the 3rd Squad of the 2nd Platoon at XX Girls’ Vocational School (hereafter referred to as “XX Vocational”).
Currently, we are at war with △△ Girls’ Academy (hereafter referred to as “△ Academy”).
We received intelligence from the reconnaissance team that a large army from △ Academy is advancing toward us.
Our school, XX Vocational, has decided to defend from the trenches dug in the schoolyard.
Together with my classmate Yuna, I will confront them with a heavy machine gun.
RATATATATATATA!!
“Enemy! Two o’clock direction! Damn it, they just keep coming!”
My classmate Yuna is firing the machine gun.
Just how many troops has △ Academy sent?
No matter how many we shoot, more enemies keep emerging from the bushes in the schoolyard.
Since we’re inside the trench, we can fire safely, but the gun is too heavy to handle alone.
That’s why I’m helping—feeding the ammo belt and adjusting the direction of the gun.
RATATATATATATA!! CLACK!
“Ammo! Hurry, hurry!!”
We’re out of ammo.
I quickly grabbed a new belt from the ammo box at our feet and handed it to Yuna.
Since it’s an old model, reloading takes a bit of time.
FWHIP! FWHIP!
Several bullets whizz past us.
It looks like they noticed we were out of ammo—now they’re showering us with gunfire.
BANG! BANG! BANG!
While Yuna is reloading, I return fire.
But with just a single-shot rifle, I don’t know how long I can hold them off.
FWHIP!! THWACK!!
“Kyaa!! I—I’ve been shot! I’ve been shot!!”
It looks like Yuna’s been shot.
When I turned around, she was screaming and clutching her stomach tightly with both hands.
There’s no visible bleeding, so at a glance she seems okay… but…
GLOOP!! BLOOP!!
“Guhh!? Uaaah!!”
A disturbing sound began coming from Yuna’s stomach.
It really was a special round after all.
Yuna’s belly had started to swell up, tight and round like that of a pregnant woman.
The special rounds we use don’t cause injuries, even if they hit the head or body.
Instead, they trigger a mechanism that injects a fixed amount of air from a canister attached to the buttocks.
Each hit delivers five liters of air.
SQUELCH… STRETCH, STRETCH…
“I—ahh!! M-my belly… it’s—burst—ghuu!? Glrrk!!”
Yuna vomited up her breakfast, panting heavily as she writhed in agony.
I had no idea how many times she’d been hit, but her belly kept swelling larger and larger.
I arched her back, pushing her stomach outward.
It looked painful, but this posture should open the abdominal cavity and make it easier to breathe.
Her belly finally stopped growing when it reached the size of a woman in her final month of pregnancy.
It turns out she’d only been hit once.
If she’d been unlucky enough to be hit twice or more…
Over 10 liters of air would’ve been pumped in—and her stomach might’ve burst, killing her.
I called for backup over the radio.
But they said they wouldn’t arrive right away.
WHIP!!
A bullet grazed right past my head.
The enemy is practically on top of us now.
Until reinforcements arrive, I have no choice but to face them alone.
CLICK… RATATAT!!
Violent vibrations and shockwaves rocked through me.
Fortunately, the machine gun had already been loaded.
This was my first time firing it outside of training.
Peering through the sights, I saw four female students running straight toward me.
There’s no turning back now.
RATATATATAT!!
“Ah—!?”
I instinctively shut my eyes when I fired, but it seems I got lucky and hit one of them.
The girl clutched her stomach and dropped to her knees.
Her belly started to puff up, swelling little by little.
“Guehh!!”
She was vomiting.
She kept reaching for the plug on her rear, but we’re not allowed to remove it ourselves.
Her stomach had grown to the size of a pregnant woman’s—but then it stopped.
Looks like she was only hit once.
Same with Yuna—one shot usually isn’t enough to make the belly burst.
You need multiple hits.
This time, I kept my eyes open. I locked on to my target.
“P-please! Help me!!”
She screamed, unable to stand with her enlarged belly.
She was crawling, desperately trying to retreat back to her lines.
I won’t let her escape.
RATATAT!!
“Hyaah—!? AAAAAAAAH!!”
SPLAAAT!!
She was hit three times in the rear.
Her uniform bulged unnaturally as a massive spray of blood erupted.
That made four hits total—20 liters of air injected.
More than enough to cause her belly to burst.
Three girls remained.
Two of them dove into a nearby trench.
The last one was trying to carry the girl whose stomach had already exploded.
It looked like she was trying to save her.
But this is a battlefield.
We were taught that if we let emotions take over, we’ll be the next to die.
I set my sights on her.
RATATATATATAT!!
“Kyaaah!?”
I fired several rounds—at least two connected.
That’s 10 liters of air.
She collapsed, clutching her stomach with both hands.
It’s only half the amount from earlier, but most girls can’t withstand even that.
She rolled onto her back, arching her hips and thrusting her swollen belly toward the sky.
“Gehh—guehh!!”
She vomited.
Since only a few rounds hit, the inflation was slower.
Which meant the pain would last longer.
Slowly, she pushed herself up onto all fours.
It seemed she was trying to crawl back toward the two girls who had hidden earlier.
But she was cradling her stomach, so her movement was painfully slow.
POP!!
The hook on her skirt snapped, and her swollen belly burst out.
Her underwear had slipped off too—her lower half was fully exposed.
Veins bulged beneath the surface of her distended belly.
Ten liters… it really is too much for an ordinary girl to endure.
The two hiding girls reached out for her.
But their hands couldn’t quite reach.
SPLURT!!
“Ahh!?”
A spray of blood erupted from the girl.
Her abdomen had split open.
Inflated intestines began sliding out between her legs, squirming like some separate creature.
The two remaining girls emerged from the trench and charged toward me.
I opened fire.
RATATATATATAT!!
“Higgh!?”
I landed a few shots, but the girl’s legs didn’t stop.
Even while shielding her stomach, she kept running straight at me.
“Hya… haah… haah…”
Her pace began to slow.
Even through her uniform, I could see her belly expanding.
And yet, she kept coming.
Her determination was terrifying.
“Guhhh!!”
SPLORCH!!
The girl’s belly split open, and her intestines spilled out.
She could no longer run.
“Hah… no… this can’t—ugh… guh…”
She dropped to her knees, curling up and cradling her belly.
She glared at me with frustration—then coughed up blood and stopped moving.
“Eep!?”
I locked eyes with the last remaining girl.
She was already almost upon me, but still within manageable range.
I took aim.
BANG!! BANG!! BANG!!
“Kyahh!!”
Gunfire from behind.
The girl who had been charging collapsed, kicking up a cloud of dust.
“Are you okay?”
I turned to see Aoi—my classmate—standing behind me.
She must have heard the radio call and come to help.
“Hah… hah… h-help me! I don’t want to die!!”
The girl with the swollen belly crawled toward us.
Seems only one round had hit her.
I aimed the machine gun at her.
“Wait!!”
Just as I was about to pull the trigger, Aoi lunged forward from the trench.
Her hand grabbed the girl by the back of the neck and yanked her down into the trench.
I was so caught off guard, I couldn’t react.
What Aoi had done was a serious breach of military law—court-martial level.
“Hah… hah… it—it hurts… my stomach!!”
The first-year girl clutched her overinflated belly, screaming and sobbing.
First-years are smaller, but the amount of gas injected is the same regardless of grade.
That’s why survival rates are much lower for them.
“Relax your stomach… breathe slowly.”
Aoi gently stroked the girl’s belly in slow, circular motions.
It looked like she was trying to save her.
Now that I think about it…
I heard recently that Aoi’s younger sister had died.
She jumped on top of a grenade to shield her teammates.
Grenades don’t have lethal power—but the blast activates the canisters.
Aoi’s sister took the full force of the explosion, and her belly burst on the spot.
Maybe… Aoi saw her sister in this girl.
“Fuuu… fuuu… fuuuuu…”
“That’s it. You’re doing great.”
The girl followed Aoi’s instructions obediently.
She even looked a little happy as Aoi stroked her head.
Her equipment was minimal—a rifle with 10 rounds, and a radio.
Oddly, the radio’s transmission button was fixed in the ON position.
THUD!!
“Bllurghhh!!!”
“Wha!?”
Suddenly, the girl’s belly burst.
None of us had done anything.
“…glub… ugh… ghhh…”
The girl convulsed, blood pouring from her mouth.
Her abdomen burst open, spilling organs everywhere.
It was a complete mess—blood and flesh sprayed all around.
“N-no… don’t tell me… a human bomb!?”
Aoi shouted.
Human bombs.
I’d heard of them.
A suicide weapon—explosives and chemicals packed into the stomach and intestines,
designed to detonate inside enemy lines.
They choose girls who are cute and friendly enough to get close to the enemy.
The system is simple.
Get captured, infiltrate, and press the switch when the moment is right.
The explosives rupture the belly, scattering the chemicals packed inside.
Any nearby canisters exposed to the chemicals automatically activate.
But I’ve rarely heard of them being used.
Most girls can’t bring themselves to press the switch—most missions end in failure.
But this girl had a radio.
Someone else must have been watching and remotely triggered the detonation
after she entered our trench.
There were no signs that she was aware of this.
Maybe… maybe she didn’t even know she was a human bomb.
GLOP!! BLOOP BLOOP!!
“Ugh—m-my stomach!?”
A strange sound came from Aoi’s belly.
It was the same sound I’d heard when Yuna’s canister had activated.
We’d walked right into the enemy’s plan.
GLOP!! BLOOP BLOOP!!
My own belly started making the same noises.
Gas surged back up through my intestines, causing my abdomen to ripple.
“Charge!!”
“Go, goooo!!”
Voices echoed from outside the trench.
Enemy girls were charging straight for us.
CLICK! CLICK!
I grabbed the machine gun—but it wouldn’t move.
The blood and organs from the exploded girl had jammed the mechanism.
One of the effects of a human bomb was temporary disabling of nearby equipment.
BLOOP! BLOOP BLOOP BLOOOP!!
My belly suddenly bulged forward.
I’ve eaten big meals before, but I’ve never seen my stomach this swollen.
It hurts—I’m full, painfully full.
And yet, more is still being pumped in.
“—!?”
Without warning, my breakfast surged up and out of my mouth.
I can’t breathe.
My swollen intestines are pushing up on my diaphragm, crushing my lungs and stomach.
Tears, mucus, sweat—all pouring out uncontrollably.
Something warm trickled between my legs—I must’ve wet myself.
I want to stop it—but my body won’t obey me.
STRETCH… STRETCHHH…
“GYAAAAAAAAGH!!!”
SPLUUUURCH!!!
Yuna’s stomach tore open like a zipper being violently pulled.
“Guh… h-huu… huu…”
Her body twitched as it lay still.
Her organs spilled out—there was no saving her now.
GURGLE GURGLE GURGLE!!
STRETCH… STRAIN…
It hurts.
A sharp, stabbing pain.
Stab. Stab. Stab.
With every heartbeat, waves of pain pulsed through my abdomen,
like I was being stabbed over and over with a knife.
I couldn’t stop groaning—it was unbearable.
My intestines must be screaming, stretched to their absolute limit.
GURGLE GURGLE GURGLE!!
POP!!
“Ugh!? I—It hurts! Somebody!!”
Aoi’s skirt burst apart.
Her belly looked like a woman in her final month of pregnancy.
Mine had also swollen to that size—and stopped.
I couldn’t see my feet anymore.
My chest, something I used to be proud of, looked small in comparison.
I’d never seen my belly this big in my entire life.
CLICK…
“Don’t move!”
Three enemy girls jumped into the trench, guns pointed straight at us.
“Ah—Kokomi!”
One of them pointed at the exploded girl.
That was her name—Kokomi.
“……”
She didn’t move.
The explosion had killed her instantly, before she could even suffer.
“See? Perfect timing, right?”
One girl grinned, holding up her radio and detonator.
So she was the one who triggered it.
“Did Kokomi know? About being a human bomb?”
“Nope. I didn’t tell her.”
As I thought—Kokomi never knew.
I couldn’t believe this was something humans could do to each other.
“You… monsters…”
“Whoa!? What’s her problem!?”
Aoi had grabbed the girl’s leg, furious.
She must’ve seen her sister in Kokomi.
CRUMP!!
“Guh!? Uugh!?”
The enemy girl stepped on Aoi’s swollen belly.
It deformed under the pressure.
Aoi struggled, trying to lift her foot.
“Maybe I’ll just squash it~”
She pressed down harder.
GRRRRK…
“Stop… it… AAAAAAH!!”
Aoi’s hands slipped.
The girl’s foot sank deeper, and Aoi’s side bulged unnaturally.
Red lines of ruptured tissue rose beneath her skin.
Her belly would burst at this rate.
I reached for the radio.
GRAB!!
“Oh no you don’t.”
Another girl planted her foot on my belly.
Just that weight alone was enough to leave me breathless.
GRRRRK…
She was pressing down.
Trying to crush my stomach too.
I clutched her leg, but I wasn’t strong enough to lift it.
My diaphragm was compressed, forcing air and moans from my throat.
CREAK… CREAK CREAK…
My skin was tearing—probably the muscles beneath.
My vision dimmed.
Being shot might’ve been kinder.
“RAAAAHHH!!”
SPLASH!!
Blood sprayed from Aoi’s belly as the girl’s foot sank in.
Her side had split open, and her intestines slithered out.
The enemy girl laughed.
She had no heart.
GRRRRK…
The girl began stomping harder on my own stomach.
My body convulsed—maybe just a spinal reflex.
SQUELCH! SQUELCHHH!!
My insides shifted, gurgling with deep, wet sounds.
My side bulged—my belly had flattened.
The pain was unbearable—
My intestines might have ruptured.
My strength left me, and her foot slowly sank in.
I made a sound I’d never heard myself make before.
SPLAAASH!!!
Her foot pierced my stomach.
The pain was… strangely dull.
My heart was racing like I’d run a marathon.
No matter how I gasped, I couldn’t breathe.
Cold chills raced over my body.
A warm liquid poured onto my hands—bright red.
“Kuhp!!”
Something spilled from my mouth.
Metallic taste.
It wouldn’t stop.
I was sleepy.
The enemy girls smiled down at me.
I closed my eyes.
I would never wake again.
